The answer is simpler than you're making it out to be.
The easiest way I believe would be to remove imp_droid_probe from the stock Hoth mission. Searching "mission.lvl builder" should bring it up. The one on the site is reasonably easy to use and would allow you to use the stock Hoth level. It'd probably break online compatibility.
The other answer that nobody has really gotten to is to figure out why it's crashing. I see the REQs listed correctly but the devs might have used a different model that's compatible with the game, or something else.
There are SWBF2 map conversions on here but that's not the correct answer to the problem you're experiencing and adding a whole other level of complexity.
The easiest way I believe would be to remove imp_droid_probe from the stock Hoth mission. Searching "mission.lvl builder" should bring it up. The one on the site is reasonably easy to use and would allow you to use the stock Hoth level. It'd probably break online compatibility.
The other answer that nobody has really gotten to is to figure out why it's crashing. I see the REQs listed correctly but the devs might have used a different model that's compatible with the game, or something else.
There are SWBF2 map conversions on here but that's not the correct answer to the problem you're experiencing and adding a whole other level of complexity.