I always followed a swather/windrower for about 30yrs......................so a wheel rake was new to me, and required a bit of a learning curve.
First off.................. While a rake might be able to gather a wide swath...........you have to consider what your baler will handle. My old 650NH will eat hay like a champ ONCE YOU GET THE BALE STARTED. But.......to start that bale requires a windrow that's not wider than the pickup, and relatively low in height. I'll call it a "lean windrow".
Some balers can start huge windrows, mine can't.
So I was forced to take a smaller bite of the apple, and remove 4 rake wheels.........making my rake a 6 wheel rake.
This is something you need consider. I think the 8 wheel rake your considering falls within a good size range for your baler.
Another thing to think about................................. Not all balers can take a huge messy windrow, and make a nice tight bale. And just about ALL balers will make tighter bales with smaller windrows.
When I used to sell my hay..........I made bales that were marketable.......not overly tight, not sloppy either. It was about the NUMBER of bales. Mo bales..........mo money. (Around here, it's hard to convince someone that a rock hard bale contains enough additional hay to justify a fair price for it)
Now, we feed all of our hay. So, I want the tightest bale possible (without imposing excess wear on the baler), and the least number of bales possible per cutting. Mo bales.........mo time to move 'em. Plus.......tight bales last longer in the feeder........mo hay.
I have an ancient V rake.
Mine can't be narrowed like most modern rakes. If I narrow the front of the V, the windrow gets very wide. Some newer rakes allow you to adjust windrow width somewhat separately from gathering width, so I understand. ON MINE, THE ONLY WAY TO CUT DOWN ON GATHERED MATERIAL, IS TO REMOVE RAKE WHEELS. Something you might have to do........it's not a big deal.
When I brought my antique(sigh) Kelderman back from the dead.....along with many other modifications, I included a provision for storing unneeded rake wheels on the rake itself.
It's a crazy way to live, but I guess we all do the best we can with what we have.
These rakes don't go for much because they're not worth much.
https://www.purplewave.com/auction/251001/item/EP0510/Kelderman_Mfg-Hay_Equipment-Hay_Rake-Kansas
The rake in the above auction gallery is FOLDED AS NARROW AS IT WILL GO. This is one of the biggest drawbacks to these rakes. It took the master fabricators at Uranus Incorporated to solve the problem
So anyways...........some of this might give you some food for thought if you've never owned a wheel rake. Better to think first, rather than face problems later.