Property tax protest- reject ifile offer?

I received an ifile settlement offer of 308K (they originally wanted 340K) and last year I paid 318K. However I bought my home for 285K four years ago and haven’t done improvements to it. Comparable sales estimates put my house valued at 275K which is what I protested the value as. Is it worth rejecting the ifile settlement offer and and scheduling a hearing? Has anyone done this before? Getting quotes from companies for improvements (like foundation, windows, decking etc) hasn’t worked out with most cancelling or never sending over quotes and I just don’t have the time to devote to meeting with people and letting them in my home just for a quote.