Need feedback. Subject to appraisal loan for BRRRR.

[Cody Burke]

I found a bank that will loan 80% of future ARV. I find a property and give lender a list of the repairs/updates and he gives it to appraiser. Example, buy for 50k, has 30k worth of updates, ARV of 100k, they loan me 80k. Its is interest only for 12 months then converts to 15-20 year amortization. This is a one time close loan. Can someone tell me how well or if this is even a good loan for rental property. I know my cash flow will decrease to due years amortized, but am I overthinking something here?