for example i have 3 new alu v rims, and 3 old ten speed wheels, with bend/rusted rims, which i can def give a better use, IF i could fit it all together

If the new rims are 700c, and if the old 10 speed wheels are from 5X2 geared bike.. i'm guessing they're 27"? then i doubt the spokes will fit

& then there's the amount of holes to consider, do they both take the same amount of spokes?!