Sickle Bar b2920 hydraulic front loader sickle mower

[marshallg22]

Was looking at this sickle mower for my b2920. I have hydraulics installed in the front for a grapple bucket - my FEL control stick has a toggle switch on the top of it to open/close it. Could I modify that switch to allow a constant open/close to run the hydaulics of the sickle mower? I wasnt sure if that front hydraulic system allowed a flow of around 8gpm consider the tractor also uses a HST. I'm moving the bucket up/down etc would affect the flow rate.

Any ideas if I have enough pressure?

Could I do the procut 17 or need to stick with the procut 13 eco - based on FEL flow?

Can I regulate the GPM of hydraulics on a future bigger tractor with more flow, so I could still use thise mower rated for a slower flow?

Is the B2920 heavy enough for this attachment? It seems with 3pnt ballast it would be fine.

I read somewhere the FEL flow rate is 4.7gpm on another post, but not sure where that's derived from.

EDIT**: My main purpose of this is to mow wet banks, trim the gravel driveway overgrowth, etc. Open to other suggestions, or cheaper models! This is the first thing I've seen that doesnt seem too heavy for my tractor, and is quite versatile compared to the price of a 3pnt sickle mower.

My FEL hydaulic system: WR Long Electric over Hydraulic Valve Kit
Sickle Mower: ProCut Hydraulic Sickle Bar - AGRISHIELD