"Dumb question" about my Direct Mail Campaign

[Amanda Fox]

I CANNOT FIND the answer to these basic question on BP (I'm sure I'm just not looking in the right spot - Aahh!) HERE IS MY DIRECT MAIL CAMPAIGN PLAN. 6 mailers (at least) to a targeted list of approx 500 properties (vacant and distressed found by driving neighborhoods once a week eventually growing to 500) once a month for 6 monthes, scrub the list, keep sending mailers to the remaining and add new properties to get back up to 500.

OK, my 4 QUESTIONS are: Should I send a mix of "handwritten" personal letters (definitely not yellow letter since everyone else seems to be doing this - hah. Planning to send a small folded white sheet with blue "handwriting" (I turned my handwriting into a font) writing in a small envelope) and postcards (planning oversized) in my 6 step campaign?? If yes, should my personal letter seem like it is from a different person than my postcard and not have my business name?? Should I write a different message in each personal letter and each postcard or should it be the same message?? Does anyone have suggestions for my marketing campaign?? THANK YOU!!!