Wearing hair every day is actually easier than you might think. You should be able to get away with weekly attachments (after gaining a little experience anyway) and the time you spend per week on your hair will keep reducing as you get into a proper *routine*.

Keep a positive attitude and you will be fine. JRob can give you the maintenance specifics on a full cap, but for me my toplace takes up about 1.5 hour per week - which is quite good! I would imagine a fullcap would take about the same, or maybe 2hr per week.