How is your eMTB cockpit in terms of spacers/position, are they stack full of spacers? If so go for a Gravel bike they have more relaxed geo and the headtube is longer, I like Carbonda and Velobuild, have bought the 099 from Velobuild and it took a long time to get it adjusted but its a very good aerobike not as comfortable would not recomend as a first road bike, from Carbonda I bought a Full Sus MTB and I really liked the quality.
For wheels I would try Elite from Aliexpress, very good quality and good price. Bought two road wheels and a MTB from them, all with DT hubs.