You could always build a jabod until you decide upon what design you want and with an improvised anvil you could be forging today and building up those skills.
I was looking to build a propane forge for about two years and my greatest regret when it comes to blacksmithing is all the time I spent not forging because I was waiting on the perfect forge or anvil etc. When it finally clicked I was forging within a couple a days with less than twenty dollars invested. Getting started I believe is the most important step.
Welcome aboard, be safe,and remember it's supposed to be fun
Pnut