If it were me and I knew the engine had been IRAN'd recently and was running fine, I'd fly it and stay close to it for the first 50-75 hours until you felt confident in it(25 hour oil changes, oil analysis, boroscope and engine data). If the two prop strikes have been repaired properly and all the internals checked good at that time I would see no urgent reason to do anything - specifically if it were running fine and many parts were replaced (bearings, seals, etc). It theoretically is a low-mid-time engine at this point.
If things were not, the equation becomes more complicated because if you did a field overhaul you would want to be sure you would have the confidence - an overhaul will retain your case, crank, etc.
I just had my IO550G overhauled at Poplar Grove with new nickel cylinders and am happy so far (40 hours in) - for me the Poplar Grove overhaul and not purchasing from the factory met my standards and goals and was more cost effective and it mine was a first run engine, so I opted to keep "my" engine.
Congratulations and best of luck with the plane. I happen to love the paint scheme. One of the best looking machines I have seen (although I know you are painting it).