Yes it can be done. Many ways to configure it. Y connector may work. Just look at the servo horn positions when activated. And connect accordingly, if the geometry is correct.

Try it.

I can tell you that with the I radios have, JR 10sxII/8103/9303,ect or something like that, I can do it if I take the time to read the booklet. The control combinations are almost unlimited. Y connector makes it even more versatile.

Me personally, I would avoid the radiator flap (top one) in the up position when using the flaps to land, until I see what the flap/flaps alone do.

Hope this helps.

Steve