We have some contact here in Canada who have closed on 100+ unit multifamily deals in the Texas region.We are focused on 75-200 units, class B+, with 7% go-in cap rate.

A year in I completed a refi on 470k of the original loan.....between high balances and lots of inquires the best rate I could get was 8.75

Interest rates range from 4.12% to 6.5%.

I figure it could be a decent time to buy soon while it seems to be somewhat of a buyers market given high rates as I could be cash buyer.

I will assume the same rate of return for reinvested money. 

So, with that your buyer will likely have to go with a different route than a conventional loan which will likely require a higher down payment and have a higher interest rate. 

HMLs would be able to fund the entire deal and give you money for the rehab; however, this would come at a higher interest rate (5%-12%). 

Wait for the intrest rates to drop a little?

My broker couldn't get me my typically personal rate since it was so close to businesses and the homes are in my LLC.

Don't worry about the rush to buy "before prices/interest rates/XXX" rise" there are always deals out there you may just need to be patient and wait until the time and right property comes along.