There is no way for us to email as this site automatically blocks out personal info such as emails, phone numbers, fax numbers, etc. However, I have copied the answer again below to see if you are able to print this time.
The idea that I have offered to is not that difficult and there really is no need to convert to a C corp. Use the links below as go bys to draft a promissory note, security agreement, and file a UCC form. Use a local lawyer's help if you have to. Should not cost you more that $400 or so and think it would be worth doing.
Your security interest is going to be in the stock certificates which are identified by number on the certificate.
5. Basically, while I'm selling him the first 30% of the stock I want to let him manage the business but keep the voting rights in case something goes wrong.
In light of your statement above and the law on 1 class of stock, the proper way for you to do this is to obtain a promissory note from the buyer of your 50% of the share. Then you will need to secure the promissory note with a security agreement that grants you an interest in the shares that you are conveying to him in exchange for the promissory note. You will need to file a UCC-1 statement with the Sec of States' office showing that you have a security agreement in those share to perfect your interest and maintain priority.
If you want to be extra careful, you can use a trustee to hold the share until payment is completed. Much like how a deed of trust works in when money is loaned in exchange for an interest in someone's home.
Since he cannot manage the company as majority shareholder unless you convey the share or quasi convey the share through a trustee, splitting the voting rights and profits does not seem to be a workable or legal possibility here.