Try as one may, one cannot predict the future. Go w/your "want to" and buy a machine capable to do all the tasks you've spelled out.

Don't let $$$'s override need.
re. cost justification. It's hard to cost justify a big ticket item but, ROI is a different story all together
The cost justification of going w/a diesel powered SCUT over a gas powered LT/GT is near nil. The diesel will be more powerful @ lower rpm while being more fuel efficient and durable but, w/diesel fuel costing so much more than gas the efficency seems to cancel out.
But throw in ROI and it's an entirely different story. The diesel will require less maintenance, last longer and hold it's value better hense, it's the better ROI.
Similar implements will run about the same for a gas powered LT/GT as the diesel powered SCUT but the SCUT will have a larger selection and be used on larger tractors, ROI is better for the SCUT.
Lets break the implements down further. The SCUT add's the additional benefit of an FEL and perhaps even a BH (backhoe). You say you need additional manpower inorder to handle the larger pieces of wood you process. How do you compensate these helpers?
A SCUT w/an FEL and chain hooks will do away w/the need of having to depend upon additional manpower. You are now doing these tasks at your convenience. How benefitial is that?
You can add bolt on bucket forks and lift longer logs and deposit them where needed (not to mention other larger objects that needs moved such as large sofa's, washers/dryers, frig's etc).
Add a backhoe w/a thumb and you can then lift and precisely place large heavy objects where you need them. All the while your back remains pain & trouble free. How benefitial is that?
How fast do you want to mow the grass?
The
BX1860 will handle upto a 54" MMM.
The larger
BX2360 (or
BX25 w/FEL & BH) will handle the 60" MMM. Larger MMM = faster mowing times.
You can get an FEL w/the
BX1860 but not an OEM BH.
You cannot get an OEM BH w/the
BX2360 either.
So if I may, I suugest that your looking at ROI and not cost justification. So which BX is best for you?
BX1860 w/FEL & 48" or 54" MMM, front blade or blower. Will do what you want plus do your heavy lifting.
BX2360 w/FEL & 54" or 60" MMM, front blade or blower. Will do what you want alittle bit faster.
BX25 w/FEL, BH, 54" 0r 60" MMM, front blade or blower. Same benefits as the
BX2360 PLUS the ability to dig and cherrypick heavy objects.
Simple ain't it

Enjoy
Dave