@Lee Cruz Yes this is possible, and actually is a popular strategy many investors use which has been coined as BRRRR by BiggerPockets.

Mortgage terms in Canada vary from 6-months to 10-years with the 5-year, fixed-rate financing being the most popular (but not necessarily the best).You will come out ahead in the long run by using variable rate financing - there have been analytical studies comparing fixed-rate versus variable over the interest rate history from post WWII until present days which produced these findings.  

I have offered some guests the choice to pay through Paypal, which has a significantly lower service fee, but is there a free site that I can use?  

It is a competitive market but I'm sure your other choices are too.

If you already included the make and model from a HVAC company you trust then they are providing your quality workmanship already by you choosing them over the sellers choice.

They probably won't have much good to say, and then you'd feel like you've made the wrong choice even though the vacuum you purchased is good for the job.My alternative suggestion would be to talk to local building regulators / inspectors, and see if the roof replacement would need a permit, and an inspection.

If you "don't have the knowledge or the financing to take on this project" I would say your only choice is to pass on it unless you know some investors in the area who you might be able to partner with.

I recently had a little convo with a popular Tk company.

Today was my off day, and I decided to tag along with friend to the second most popular auto auction in Cincinnati.

OP  let us know what you decide to do and chronicle it for the audience I know this is a popular subject to many