i remember when i started playing i would only hit my 3w on the golf course. However, at the range I would continue to practice my driver until i felt confident enough to take it to the course.. Early on i relied on the importance on practicing my driver routing to the point that I was able to take it to course with much success.
I would still get the driver, get yourself properly fitted.. and you dont have to get today's latest and greatest, trust me, you probably wont even see much difference in distance if any. I think right now it would be a great time for you to buy since golf season is almost over.
Remember work on that driver, build your confidence then take it to the course.