So the only thing you gain is 5HP and a cab and a couple less hours.
HUMMM
Diet and loose a couple pounds to make up the difference in HP. [emoji14]
Buy a new cab fully loaded for the L2900 for way cheaper than 11K.
Now for the serious side of this conversation.
Do you want to own an Orphan Tractor?
There are reasons why Bobcat dumped the line of tractors.
Give you a couple hints...
It wasn't because they were getting a good reputation for having a good product!
And it wasn't because they lasted a long time, were easy to get parts for, and easy and simple to work on.

I've heard several dealers will not even work on them and any of the available parts are getting scarce.
I have an L3450DT-GST, it's 25+ years old and I can still buy about 95% of the parts new to fix it, and there were enough made that used parts are fairly easy to come by.
Your L2900 will be the same way!
Your not going to be able to say that with a Bobcat Tractor.
And don't get me wrong I think Bobcat make some killer products, My 38+ year old 743 Bobcat, with a renewed power of a Kubota V2203, still out performs most other skid steers made in it class then and now.