So he is still doing the work or is he paying for the labor to do the swap? Your comment is contradictory.
I don't think so. The problem can be when you do the work yourself is that you might not have access to a full workshop.
My experience is that I trained and worked as an engineer for many years but now live in an extremely remote area in the middle of Germany (yes, sometimes I think with my dick). I take engines apart, rebuild them and, when my health allows, really enjoy it.
But there are times when I really get cheated. I recently rebuilt a MK4 tdi engine but got totally ripped off only because I have no lathe and couldn't machine the valve seats myself. Altogether, a 'crash-car' engine with only 60-80km on the clock and a 1-year guarantee costs only about 200€ more than what I paid for the machining - and the engine would have been delivered instead of having to drive 50 km (twice) to the machine shop.
So the solution is to invest megabucks and buy all machines that you could possibly need in order to save.
I must say, apart from all the crap we hear in Europe about the (both?) political parties in the US, it is really impressive how you have so much freedom with respect to what you do to your motors and how you seem to just do it.