Insulation to condition attic space
Any reason you are not you are not using fiberglass batt insulation.  This can be done your self with adding 2x4 on end to get at least 9.5 inches.  Then staple the insulation up.  no need for baffles if insulation is at least 1" less that rafter width. 
The cost saving will leave you enough money to pay someone to hang drywall on ceiling maybe even spackle. 

Spray foam is a good product but expensive and your electrician will charge alot more if he has to run wires through it for lighting.