Are extensions with bumpers after the start of the game legal

[staplemonx]

We are looking to increase our surface area to make a better blocking robot after the autonomous period and before the end game. To do that we want to extend out to fill the 84 cylinder and block as much of the scoring lane as possible. If we include the bumper on the extensions as part of robot dimensions are we legal?

The tan objects represent the extensions in their starting positions. The colored objects represent the base and the extensions in their blocking configuration.