First longboard help

Hi guys, I’m after a bit of advice buying my first longboard.
I surf a 7’10 minimal (that I'm keeping for the larger days), its about 55l I get good green waves on it but living in-land I don’t use it enough to get the wave count id like and have frustrating sessions. I generally only make a day trip to the coast for small clean conditions as I don’t want to use all my energy getting out. I've spent many sessions looking on in awe of the guys on longboards, sitting further out and gliding past me on repeat. My aim from the longboard would one gets me more waves, catching further out from the beach, long rides/glides, then moving onto cross stepping and NRs.
I’ve been looking at the Custard Point UNR (https://www.custardpointsurfboards.com/ ... nose-rider ). I’m struggling to decide between a 9’1 and 9’4. The guys in the shop said for my size (5’10 77kg) the 9’1 would do, but I don’t want to go too short. I took the 9'1 out for demo and it instantly felt like load of volume (75l) compared with the mini-mal I ride.
The 9’4 is 84l, do you think that would be too much for my size? The 9.4l would be more waves and stability, what’s the negative? The board definitely felt slower than mine which put the small doubt in my mind in whether a wider longboard is the way to go over a longer performance type. I would love to be able to cross step and nose ride though.
Thanks
Ben
I surf a 7’10 minimal (that I'm keeping for the larger days), its about 55l I get good green waves on it but living in-land I don’t use it enough to get the wave count id like and have frustrating sessions. I generally only make a day trip to the coast for small clean conditions as I don’t want to use all my energy getting out. I've spent many sessions looking on in awe of the guys on longboards, sitting further out and gliding past me on repeat. My aim from the longboard would one gets me more waves, catching further out from the beach, long rides/glides, then moving onto cross stepping and NRs.
I’ve been looking at the Custard Point UNR (https://www.custardpointsurfboards.com/ ... nose-rider ). I’m struggling to decide between a 9’1 and 9’4. The guys in the shop said for my size (5’10 77kg) the 9’1 would do, but I don’t want to go too short. I took the 9'1 out for demo and it instantly felt like load of volume (75l) compared with the mini-mal I ride.
The 9’4 is 84l, do you think that would be too much for my size? The 9.4l would be more waves and stability, what’s the negative? The board definitely felt slower than mine which put the small doubt in my mind in whether a wider longboard is the way to go over a longer performance type. I would love to be able to cross step and nose ride though.
Thanks
Ben