If I’ve understood the conditions correctly, here is what I did (you didn’t mention how many total minutes or how much cash collected in your scenario, so I just let mine run):
Trousers, Dairy Plant, Endless, Hyper, specifically limited to 1 weapon slot (using the selector at the startup screen).
I initially chose Greatest Jubilee as my weapon and card XV (Disco of Gold) as my starting Arcana. At minute 15 I opened a chest and got Super Candybox II, which forced me to choose another weapon, so I chose Phiereggi.
Some preliminary notes:
Dairy Plant isn’t nearly as good as Bone Zone for gold farming.
In Bone Zone I generally don’t have to move to collect XP, but in Dairy Plant I’d go stagnant after 30-45 seconds because my area of effect is so large, so I’d have to move, and I wasn’t always present to do so; this would stall my XP/level gain somewhat).
At minute 30 (pause screen; damage stats not shown on this screen that I could find):
Level 421
Gold 760K
At minute 60 pause:
Level 679
Gold 2.28M
At minute 90 I stopped because I lost interest, but I’m sure I could have continued on for a very long time (around minute 70 enemies just seemed to not appear much, which I hadn’t encountered before; I was on level 699 for a very long time despite running around looking for someone to kill):
Level 699
Gold 3.96M
Enemies 160,298
Damage Dealt 600M (I didn’t see it listed as a discrete figure, but I added the 2 weapons together).
I’ll note again that, for gold farming purposes, Bone Zone is far superior, for several reasons: lack of obstacles; more/difficult enemies (faster XP); and a high concentration of pickups/lights (but no floor chicken, so you need to have good survivability).
As an example, in Bone Zone, same exact startup conditions (which includes Hyper, as I also did in Dairy) (and I was also forced to choose a second weapon around minute 6, so chose the same Phiereggi):
I aborted at Minute 30:
Level 837
Gold 3.6M
Enemies 364,839
Damage Dealt 1,132M