It was in 2018 so I just offered full price without an appraisal gap.

Over the year since I have purchased the property I have managed to get the appraised value from $570K to 775K, a lot due to the normal market but a lot of sweat equity too.

. ^^ yes I closed on a house hack a few months ago and this is exactly what my mortgage broker told me, FHA appraisal itself was not much of a problem, the appraiser just looked for proper hand rails, chipping paint, relief valves on water heaters, etc, which are not a big issue unless the house is in bad shape, the bigger challenge was getting an FHA offer accepted over competing offers because of the perception to sellers that FHA is a big hassle/may not close, a 203k loan can wrap money for any needed repairs into the mortgage, so showing pre-qual for that may make your offers stronger 

The current value of the home is now 290,000 (2021); When I have finished the new kitchen and bathroom components, I believe it will appraise between 360k - 410k, depending on timeframe.

The property appraised for 51k higher than the sales price so a refinance will likely occur in the next 6-12 months after purchasing the property.

Ask about appraisals, some lenders use BPO.

For context we bought the house for 99k and last appraisal put the property in it's entirety at around 350k.

By 'your network', I mean: Real estate agents/brokers, lenders, property managers, contractors, inspectors, appraisers, etcEmail, Facebook, Instagram, LinkedIn?

The C/O will be around 15-17k depending on the appraisal.

We had to fire a real estate agent because she was moving too slowly + lacked negotiation tenacity and it caused us to miss out on deals.Once under contract, you can also negotiate further depending on how inspections of the property come back and also appraisals.