Pull out all the Equity... Or only what I have put into it

Hi Everyone,

I purchased my primary home for $95K.  We currently owe about $83K.  I just remodeled the master and will do the same for the guest bathroom using my personal savings for both bathrooms. Comps in the area for similar sized homes are between $105K-$120.

My overall goal is to acquire more rental properties beginning with my primary residence.  So, my question is, if I refinance(current rate is 4.25%) my primary residence it to a lower interest rate (Navy Fed quoted me between 3.50%-3.75%), should I take all of the equity or only the total of the remodel cost for both bathrooms?