First thing you’re going to want to invest in is a spray rig. You’re going to need multiple passes of gly to kill off all the grass. I have an 20 gallon ATV sprayer and I made a 4 foot boom with multiple nozzles, you can buy similar boom rigs at Northern Tool.
You need a 100% duty cycle pump for acreage. “Lawn and garden” rigs will burn out, they cannot withstand being run for long periods of time and they will burn out in 3-4 uses when doning more than 1 acre at a time.
You’ll need a way to haul water if you don’t have a well on site. My solution is 5 gallon laundry detergent drums, I have 10 of them.
Does the Allis have a 3 point with PTO? If yes, I’d be looking at a disc harrow for the 3 point. This is a very versatile implement, I have an ATV disc harrow that a weight rack has been added to and it digs to 3-4 inches which is plenty for deer crops. You need to do multiple passes of course, but to move up to something faster is $$$. You’re only doing 8 acres and you will probably lay down a perennial like clover as part of the plan so you won’t need to do 8 acres every year.
If the land is rock free, you could rent a tiller for your tillage, but you have to have a super-slow crawling gear on the tractor and very little rock.
You’ll need some way to mow down the tall grass the first time, even if it’s dead grass from the pervious year. You will also probably want a mower to mow the clover, so some kind of 3 point mower would be desireable.
A cultipacker or roller would be desireable as well. Not a necessity, but very nice to have. You’ll need a broadcaster, but I just use my 80 pound tow-behind broadcaster.
All of those impliments together won’t cost as much as some of those all-singing-all-dancing one pass machines, and you’ll have way more versatility. The sparyer will get used more than any of them.
You have to put together a game plan with what you want to plant before moving forward. You don’t need, for example, to spend a lot of money on a big tow-behind broadcaster if you’re growing a lot of clover, because that only gets seeded once every 3-4 years. So some things it’s better to save money and just do it by hand.
Grouse