Sumo vs regular when equally suited to both

If someones proportions are equally suited to both sumo and regular i'm guessing sumo is the recommended form for the fact it gets more carryover from squats right ?

Depends on your squat style, Stance width, low bar, high bar etc.
The Squat has a carryover to both styles, I feel low bar back squats has just a little better Transfer to conventional deadlifts. Front Squat  is a good assistance for sumo in many ways.
But you will Benefit from Squats anyway, I did whole cycles only squatting, no deads, and could still pull a PR at the end.

There nothing stopping you from doing both during cycles. How far to next comp?

There nothing stopping you from doing both during cycles. How far to next comp?

No real plans to compete for the next year

Okay - then you can play around with both of them. If you were close to comp. I would say stick to the one your are strongest in/trained most - but with such good time you can afford to experiment a little. I hope that answers your question.