That's exactly the same as my SR5.4. engine is a longshaft Yamaha 80.
the engine is about 15mm off sitting on the transom, ie one hole up from sitting on the transom, and its offset 1.5" to starboard
i think the set up is about optimum.
seariders with the straight transom without the cutout are for twin engine setups.
I see little point in raising the transom to fit an XL engine, unless you happen to have one. its a Searider, its never going to be a dry boat. even in flat calm in mine i still manage to get drenched