Please help me im on the computer what can I do aghhhhh sooooooooooooooooooooooooo bored!
You should check with a professionalThe rafters for the ceiling are often structurally necessaryYou may be able to vault and leave the cross beams in place, they could be covered to be more attractiveYou will need to consider any wiring and possible duct work you may exposeYou will also loose some insulating values and likely increase heat and cooling costsYou will have a lot of expenses and you will need to re insulate and drywall the ceiling which means you will need a means to hang the sheets and work on them like scaffoldingFind someone who is familiar with this type of conversion and talk the project throughYou will need permits and so onIt would be faster with a bigger and more experienced crewThere are a lot of hidden costs and problems with this type of projectGood luck.
Nothing is cheap anymore ! But try asking a carpenter for adviceGood luck!
Ask home depot for an estmate.