A/C Swap

[sleep_deprived129]

I am about to replace the A/C compressor on my '88 Camry 3S-FE 5spd. I have also ordered a new expansion valve and a new reciever drier/accumulator for it. I plan to have it evac'ed and charged by a shop as I don't think that is something I want to attempt myself. At this point the plan is to discharge it, pull everything apart, flush all lines, the condensor and the evaporator, put it all back together (while swapping necessary parts to do a 134a retrofit) and take her down to the shop to be evac'ed and recharged (and probably leak tested). Does this sound like everything I would need to do? Any other steps I should take or things I should check?