I am considering either an ICAN A22 (I love the black color) or an ELVES Avari Pro. The ELVES is UCI approved, unlike the ICAN.
the ican is quite old with recommended 25/28C tyres. That's very much not future proof.
the elves is surprisingly heavy (baby size 990g) and maxes out at 30C.
Have a look at sp cycle SP-R025-SL - you can get it for cheaper than what the website says. SP cycle = Tideace = haidelibicycle.com = disai. So if you email all of them you'll get the best deal.
SP Cycle has several models you may like.
Lightcarbon has a model or 2 you'll like
I really like my long teng 268.
Velobuild is now consistently making nice frames, the 268 is proving very popular.
Given the elves look like an endurance bike, the yishun R1018 may be good for you - super light, monocoque -.
I would never buy an ican nor an elves myself
Re. tools, have a look at a few bike builds video on YT. you'll quickly notice what tools you need.