Have you ridden full-suspension bikes before?  If not, have you ridden both XC and trail hardtails?  Do you have an idea of what geometry you'd want?  The FM909, FM936, and S3 that Schumo mentioned have great reviews, they're super light, fast, and aggressive.  They are pretty progressive geometry, though, which can be good or bad depending on your preferences.  They will have a longer reach, steeper seat tube angle, and slacker head tube angle than your average XC bike (although the newest name-brand XC bikes are starting to go that way too).  I have an LCFS911 that I really really like.  It's boost, moderately aggressive (kind of in between FM936 and typical old-school XC geo), and pretty light.  It's maybe 100-300g heavier than some of the other XC frames, but mine came in at 23.2 lbs with a moderate build kit.

As far as the rear shock, just get a shock that matches the eye-to-eye and stroke that the frame takes.  There's regular eyelet and trunnion mounting styles, too.  I personally am a fan of Manitous, so I run a McLeod on one bike and Mara on the other.  Most Chinese direct frames don't come with a shock, and I believe some may come with hardware.  The hardware is usually listed on the specs page, for example my LCFS911 uses M8x22.2mm hardware, so just purchase hardware of that size.

it's been 10 plus years since i've test ridden a full suspension bike.  I've only ridden xc hardtails as that's what i've always ridden and raced.  I love to hate going uphill so not sure I'd want a really slack headtube.  My current race bike is a hardtail with a 69.5 or 68.5 head angle.  I'd say its semi progressive, but still along the lines of xc.  I've seen the video on the Trifox/ Scott full suspensioon I may look into.  What's the difference then with the "regular eyelet and trunnion mounting styles?"  So to answer your question on geometry I'd want it xc or maybe even down country, but like i said, i will be doing xc racing with it.

I've got this frameset.  It's got a BB92 and I have a Hard Rock crankset off Aliexpress to go with it.  I'm having spacing issues with the crank only having a 1-2 mm spacing between the left chainstay and the crank arm.  I bought a BB92 shimano bottom bracket off amazon.  It doesn't include any spacers.  Does anybody know if I need a spacer on the BB, and will it change the BB width, or do I need a new crankset.  There is a bottom bracket and spacers included with the crankset so I may try that.  This just seems like an oddball match.  Does anybody have this frame and what BB and crankset did you go with?

https://www.flyxii.com/page5?product_id=25 

Do you have a regular rear wheel you can use without the thru axle?  Are your hubs the kind you can get adaptors for?  I have spare two bolt ones.

What size is your Workswell frame and how tall are you?  How does the frame handle?  Is it a raceworthy rig?  How does it handle?  This was on my list until I saw the Trident Thrust frame.  I have yet to build it up.  Thanks.  Oh, by the way were you a Marine?

I've seen a few mention that the Tideace and Thrust are the same.  They do look identical and the geometry are pretty much the same.  The only difference is that Thrust you can get BB30 or BSA, and Trident only in PF30.  I may purchase a PF30 as I already have a BSA Thrust frame.  It is pretty cheap, I may build up another in the PF30.

I've ordered a few frames from China.  Can anybody tell me how they really operate?  Does anyone else feel like you order frames and take it with a grain of salt that you will get it or not.  I have not been disappointed yet and everything has came as ordered, but several things I wonder about.  Why do they have so many "agencies" selling frames with different prices?  Is the person you're dealing with really one individual person and is that really their name, I have a feeling it's several people using one name.  The Alibaba website when trying to order frames just seems so confusing.  I will contact suppliers and get emails from my "contact" from another agency and it's like they don't even know who I am.  Why does this not seem more straight forward and is it their goal to confuse me?

Are you sure these are the same?  They look similar, but have different geometries and the Tideace you can only get in a pressfit BB.

sorry for the late reply, but yes you are correct.  thanks, i recieved mine and didn't have to pay anything extra.  i just had to go to the post office to pick up as it needed a signature.