A couple suggestions:
1) When you first pressurize it after filling, I'd do 20-30 psi to make sure the lid is seated and the seal is "set."
2) While it's at that higher pressure, leak check the crap out of everything. Make sure the lid, PRV, posts, etc. aren't leaking by spraying everything with star san or a soap solution. Also make sure every connection on the manifold and regulator isn't leaking as well. Lean in, get close and make sure you don't hear any hissing.
3) Purge the headspace a couple times to minimize residual O2, then turn the regulator down all the way, purge one more time, then slowly bring the regulator up to your desired carb/serving pressure. 10 PSI at 40 deg will give you 2.3 volumes of CO2.
4) I'm sure you'll be checking on it very regularly, but until you know your system and fully "trust" each keg definitely keep an eye on it. Look out for the regulator creeping a bit, beer slowly leaking, etc.
Everything else looks great! Just make sure to leak check. Remember you should get 1-2 corny kegs per pound of CO2 if you're force carbing, so if you have a 10 lb tank you should get maybe 10-20 kegs out of it. Any less and you have a slow leak somewhere.