So to sum up there are strong job prospects in IP law for electrical and mechanical engineers but not so much in the other fields. And with my degrees its ok, not great, phd's are preferred and I can expect a starting salary in the 60's?
I hate to be a downer, but I think your summary above is too rosy. And maybe reading to much into your postings, but I also think you have come around to the point where you may be comforting yourself to go forth and in-debt yourself using unwarranted assumptions based on generalized answers here.
Yes, there are relatively strong prospects for EEs (but not MEs). And the prospects for most other fields generally are not strong - or are outright weak.
As for your own degrees, my opinion is that you really need to dig into researching whether these are at all desirable
in patent law, and if so, get a feel for how desirable. Hound your UG career services and alumni contacts people. Do they know of anyone in your program (several years your senior) who went to LS and might be willing to chat with a younger alum? Do the R&D to locate patents in your field, see who wrote them, go to their law firm bios and see what their UG is. Is there a professional engineering association for biological engineers? Contact them and see what info they may have on members who are patent attorneys, what are hot technologies and patents in the field, etc. Google your local big cities' bar associations, find their IP Law sections and ask them about patent attorneys in your field.
This part of your post was what really got me ranting: "with my degrees its ok... and I can expect a starting salary in the 60's". You have at present absolutely no basis to expect a starting salary in the 60's. You have no basis to expect ANY starting salary, until and unless you find out that someone with your degrees is at all employable.
That's the rub - you are not looking at options between high salaries vs. more modest (60's) salaries. You are looking at options between working in patent law vs. making panini at Panera Bread.
I wish the search function was working on this forum. In the last three years (when this forum had a lot heavier traffic, before some recent long-term tech issues/downs), we've had many posts from frustrated LS grads, even Tier 1 or Top 14 LS grads, who haven't been able to buy a job.