282 horsepower per litre is an extremely ambitous goal.
200cc x 4 = 800cc
226hp / 0.8 = 282hp
91mm Peugoet F1 piston, stroke is 30.8mm, a new benchmark for oversquare.
Your piston will do it real easy, as its designed for 25 metres per second.
In your motor it will doing a lazy,
(30.8 x 2) x 17000 = 1047200
1047200 / 60 = 17453mm or, 17.5 metres per second.
You wont have to worry about pistons exploding, although you may have an issue with big end bearing loads, is my gut feeling.
Your biggest problem will be, valvetrain, you could try smashing apart some nitrogen springs to steal the seals, they are used in press tool design, i doubt F1 suppliers will share their secret stash so readily.
AND, it all has to be titanium upstairs in the motor, except cam and piston, so, you have the mother of all ambitous projects ahead of you and I hope you hang in there and see it through, i salute you!