Has anyone used bridge loans for this type of strategy or is there any other loans that anyone would recommend other than HELOC?

There's a specific forum for House Hacking.You'll want to spend some time reading through there as it's a common topic.

This vary heavily town to town. 20% down is great if buying strictly as investment but if you have a way of owner occupying I would explore that route and apply the 20% down to increasing value of property and instead using low money down loan. 

When you buy a house, how does that impact your credit score?

Hi everyone! My name is Monty, and I’m based in Freeport, Florida. I’m looking to invest in nearby areas, focusing on fix-and-flip projects and new ground-up construction. With 30 years of residential construction exp...

Are you trying to afford a house much more expensive than your W2s could cover? 

Consider FHA loans for lower down payments and reserve for repairs or upgrades.

If you are moving from your SFR to another property, then you should be able to get a 5% down loan or even 3% if it's FHA.  25% is only if you won't be living in the property in my experience.

I believe your loan could get called if you transfer ownership to an LLC without consent of the lender, especially a brand new LLC that does not have two years of tax returns.

My plan is to start house hacking.