CMAX
HAMILTON CANADIAN EQUITY YIELD MAXIMIZER
stock TSE

CMAX is only invested in the Canadian market?

Yes, Hamilton just released a fund CMAX which is comparable (not exactly though) to HDIV.
Your strategy is fine if everything is going good. If we hit a bear market, it's anyone's guess how well your strategy holds up so that's the risk. The time to pay off your loan is pretty long so I wouldn't say I'd expect something to make your strategy fail in that time but at the same time I wouldn't be too surprised if it didn't hold up either if you're counting on one fund to make it work.
That said, you're not going to be financially ruined (presumably since I don't know your actual situtation) even if your strategy doesn't hold up if you're only doing this with 7000. Just make sure you're comfortable if your strategy goes south before going into it and then decide whether you want to take on the risk.

CMAX is only invested in the Canadian market?

Yes, Hamilton just released a fund CMAX which is comparable (not exactly though) to HDIV.
Your strategy is fine if everything is going good. If we hit a bear market, it's anyone's guess how well your strategy holds up so that's the risk. The time to pay off your loan is pretty long so I wouldn't say I'd expect something to make your strategy fail in that time but at the same time I wouldn't be too surprised if it didn't hold up either if you're counting on one fund to make it work.
That said, you're not going to be financially ruined (presumably since I don't know your actual situtation) even if your strategy doesn't hold up if you're only doing this with 7000. Just make sure you're comfortable if your strategy goes south before going into it and then decide whether you want to take on the risk.