Opinion on heloc LTV

[Tyler Sanzone]

Looking for some opinions on how much percentage to tap into for a heloc on my primary home. I'm looking to apply for a heloc through PenFed who offer up to 90% LTV. The house is valued around 325k and I owe 170k. The primary reason for the heloc would be to use about 10k for some debt consolidation, and the rest for my first investment property to BRRRR. I'm questioning if it's worth tapping into 90% at a higher interest rate (as low as 4.75% adj) or using a lesser LTV for the lower interest rate (as low at 3.75%) due to the fact I need to use it for debt consolidation as well.