Don't be afraid to ask questions, the more knowledge you have going into this, the more likely you'll enjoy it in the end. I know for me, I had really big questions about the GTX 970s ability to run ED on VR. I couldn't just upgrade both my card and buy a headset and I was worried that I would be buying something that made me want to upgrade because of poor performance. In the end, the 970 was good enough to get by on if I worked on tweaking the graphics to get the best performance and graphics. I basically worked the graphics until it forced ASW on around stations and planets and then stayed in ASW until I left those areas. It wasn't perfect, the station services board would often have quirks and glitches, but I kept working until I got the best graphics and performance I could. I bought the Rift because I knew the GTX 970 could run it on low settings and I could jump in and enjoy for almost a year before I could afford the GTX 1080. I've had months of enjoyment and, while the WOW factor isn't as big, I still find it awesome to jump into my ship and fly it.
Also, consider the WMR headsets as well if you can get one for a suitable price as many find them to be adequate and some even prefer them over the Rift. They seem to have a little lower hardware requirements than the Rift and if this could get you into VR quicker, why not? Heck, in 2 years there could be better headsets on the market and will likely have higher hardware requirements or be more costly.