I would go with the letter of recommend. from the hospice, if it is indeed a great letter. You also have to think about whether you are applying to a MD degree program or a MD/Ph.D. program. If your going for the latter, then a letter of recommend. from a professor of a lab that you are working in is important. Since you're hinting in your post that you are leaning towards a MD/PhD (correct if I wrong), then the best way to approach in getting a recommend. from that professor in your lab, is to be upfront of your intentions (e.g. you want to enter medical school) with that professor. You don't necessarlly need a letter from a professor whose lab you work in to get into med school.
But if MD/Ph.D is what you want and you have been working only for a month, my advice(s) is/are be involve in the lab as much as you can. Talk to the professor about starting on a semi- or independent project a few months down the line. Do projects that involves things that you have done in upper bio. labs. If there things that you have not done before, ask other people in the lab for assistant. It's possible to get a good recommend from a lab that you have worked for in 5 month but if you need the recommend. in the upcoming months, then just submit the recomm. from the professor at a later time if possible. 😎
Where my doggzz at!!!-DMX
