Most lending is based on cashflow, not the 2% rule (although still a good rule of thumb for some types of investments), might have the most help from the group if you provided some of those details here just so it'd be easier for us to help you best. 

If my target would be low income residents, are there any grants, tax credits, or funds available to help me with the conversion? 

Good tenants help you protect your investment.

We would have to come oop about 400-450 for 2nd HH.Also planing to use other rest of heloc for a dscr or brrr so that would possibly help as well.Would you wait until rates drop to do another HH and just buy the brrr/dscr now?

My humble advice to anyone attempting to do creative finance is:Creative finance is for experienced investors who have access to capital if anything goes wrong.Learn the lawsDon't use a contract "off the internet", laws vary by state and are also regulated on a federal levelLearn the financing techniques correctlyDon’t skip parts of the processDon’t ever do a “kitchen table” closingUse the proper deedAn attorney can help you with the legal work, but the rest you are on your ownYour guru will not bail you out“Investing” in someone else’s deal by providing a small 2nd loan so the “investor” can pay for “cash to the seller” and for “closing costs” so he can do the deal is a very bad planKnow what problems can ariseLearn the responses and solutions to problems before they are neededKnow everything there is to know about Title and what that meansKnow who a "protected class" individual isLearn the "back doors"Learn human natureUnderstand timelinesUnderstand regulation enforcement (some of these "mistakes" have a 10 year statue of limitations ( they can charge you 10 years AFTER you do the transaction) and carry hefty fines and possible imprisonmentThe court doesn't accept "I didn't know" for an answer"Know that the source of the lead plays a serious role in some states and federallyKnow how much of a "profit" pushes the boundaries to invite an investigationYou can be sued by the seller if you don’t do things correctlyYou are automatically at fault if an investigator or attorney or regulator gets involved.

I did all of the work myself and know the ARV's in the area pretty well so that helped. this is like my 8th deal and I analyzed deals for like 3 years before I bought my first property so that has gotten way easier.

Happy to help!

Hope this helps. 

People interested in this type arrangement probably don’t have access to $150,0003.

With land investing/flipping becoming more democratized/accessible  (so many landed courses, tools, resources etc), current prices/RE trends etc, is it still worth getting into land investing/flipping for a brand new RE investor ?