Also - with this being my first investment property and first time working with a CPA, I have no idea what the typical fees are.

I'm doing some math on a couple houses and I figured I'll reach my max DTI after two houses with a typical local bank and their conventional loan products. 

I manage in Barstow Ca, I think the climate is similar to Arizona where you are, I install window swamp cooler, those guys cool up to 1200 square feet house very effectively n the power consumption is s no more than a typical appliance.

They rented your place for an agreed price and you're now offering them reduced functionality and features for the same price unless you're willing to cut them a big break on the rent.

And hands me a copy of the Portland Metro business journal.Each week they feature the top business in the metro area.. in real estate health high tech you name it.this one was top 30 new construction builders..And there I was Number 24  .. and well DR Horton was number 1. 

If the lot is zoned RSA-5 (pretty typical residential zoning in Philadelphia) you should be able to build on 70% of the lot if it's a median lot and 80% if it's a corner lot.

I’m looking to get my house rented out by January 2019. How long does it normally take to find a good tenant?

Typically, the Canadian tax will be greater than this and you can get it back with a foreign tax credit filing - so you are NOT double taxed.You can also charge active management fees from the Canadian corp against the C-Corp and withdraw funds that way. 

Price (like stick built homes) depends on finishes, features, etc.

Yes that is typical but with a 12 unit building you may be able to find a manager for less than 10%.