Many questions

Hi all! Soon to be an Air Force Nurse! This has been a long and twisted road. I have many questions and they should take several posts. First though, I have a good recruiter, however, he has changed from recruiting enlisted (the broad spectrum) to recruiting Officer, Nurses. I feel like he might not know everything.
A little background: Married, no kids, three dogs, 47, good shape and fitness, Prior service (5 years), Army, ambulance driver, then medic (awarded Combat Field Medical Badge), Desert Shield/Desert Storm vet, then LPN. The Army wouldn't let me go to school to become an RN, so I got out, went to Community College got my RN, and now I'm a Senior at the University of Delaware. Cum GPA 3.98, school full time on-line RN-BSN program, enrolled in 3 classes (10 hrs) Winter term, enrolled 3 classes (10 hrs) and two week practicum, then one more class in Jun/Jul and I graduate with BSN in Jul, commission in August and go to COT in late August. I work full time as an RN on the Medical-Surgical floor of our local small hospital.

Questions:
1.) Signing bonus? Amount? Committment? Best combonation, i.e. $20K for three years, or $30K for six years?
2.) Tuition Reimbursement? How much total/per year? Can we get both the reimbursement and bonus? Committment?
3.) Initial Rank/TIS/TIG according to experience? Prior service, 4 years as LPN, 1 year as RN.
4.) 1st duty station? I will be accessed as a "qualified" clinical nurse so I wont have to go to Orientation course. I will go to COT and then to my 1st duty station. I want to go to Germany, Italy, Guam in that order. I don't know what to ask for for 1st choice of stateside assignments. I speak, read, and write German fluently and I speak conversational Italian. I grew up on Guam with my Father (Retired Air Force MSgt.)
5.) My Mother is my dependant (65, not working).
6.) MEPS: I can do everything but I would like to hear experiences. My knees are my oldest part of my body. Can anybody share about the knee trials (Go down, duck walk, get up, etc.)
7.) Weight at MEPS? I am at 180, limit is 175 for my heighth. I am losing it. How tightly does MEPS cleave to the regulation? Add an inch, subtract a pound or two, give a girl a chance??

Enough for now, you all say. I am going to make it all the way but these are nagging at me. Some I have asked my recruiter, some I don't want to ask him, and the answers to some set me up to ask more specific and intelligent questions that he has to answer. i.e. the money equations and the Mother is my Dependant question.
Thanks, Ladyviola