Marsch-Lied-Liebhaber

Hello, I've decided I'd like to own a copy of one of my favorite records instead of listening to it digitally. I found a seller and have chosen an entry level record player with built in speakers. I have some questions though about general record use and how to make sure my record lasts a very long time. First, is this a good record cleaning kit for just cleaning before and after playing? Do I have to apply the cleaning solution every time before playing and after or will just when its kinda dirty suffice? Can I clean the microfiber cloth by hand with just plain water? http://www.amazon.com/gp/aw/d/B00B29N1NG/ref=ox_sc_act_image_1?ie=UTF8&psc=1&smid=ANJM0X7R8Q95P Second, how do I know when to replace my needle? I understand I may hear more frequent cracks and pops and lower quality sound if the needle is worn. Lastly, will one of the inexpensive Jensen players suffice for casual listening to at most three or four records? Probably only 5 times a week maybe. Not looking to spend over $100 total. Sorry if these are rather stupid questions, I read through the FAQ and got a good bit but still had some more specific questions. I'm very new to this and just want to make sure my records lasts a long time.