Offer accepted at 350K, with rent and all the repair cost needed estimating at 30K (do you think its too low?)

The tricky part is "distressed" because estimating the rehab is difficult.

We are in the process of completing our taxes and our tax agent is requesting a lot of data and is estimating about $650 to complete our business taxes, which seems pretty reasonable.

The HELOC interest rate range is 3.99-4.625 (just an estimate until they run our credit etc).

AirDNA estimated around 80k for this property.

Rents are estimated to be $2300/mo and post construction appraisals are averaging $377k for this model.

I think it has great potential there are 7 units and it's priced about 50k per unit.The units are each 2 bed 1 bath and is netting an estimate of 450 per unit per month.I went on BluePockets rent estimator tool, and the comps for the area is $865 a month. if I can net $600 which is no where close to the $865 that BluePockets estimates, then the property would generate 50k a year.Am I missing something and the property is fully leased so it has to be in pretty decent shape.

(Example: buy house for 250k, put 25k into rehab, ARV is 320k estimated return after repair ~45k + whatever equity we have after a year)?

Negotiations of the final purchase were based on comparable price/sf and cap rate for the area, as well as anticipated deferred maintenance that was estimated during the initial property visit.

In other words, getting an appropriate ARV for a subject property and estimating the correct rehab cost.