In contract with property - proceeding after 16% lower appraisal

[Thas Himal]

This is my second investment property- $75K purchase price (1.5k seller credit) in the 63136 zip code. 20% down. Appraisal came in at $63k and approx $5k in repairs to make rent-ready. Will cashflow ~200 a month. Anybody have advice on the best ways to negotiate this either with purchase price or repairs? The advice I read on Google seems quite surface-level and I’m not sure if the seller will budge due to the max seller credit already. Thanks!