Last summer, one of my inside dually's deflated. It was unsalvageable. Rather than replace one tire in a set of duals, I replaced both steer tires and moved one of them back to the dual (they were all the same tire). What I ended up getting on the fronts was BF Goodrich ST 230's (245/70 R19.5). These are truck tires and specifically made for steering wheels. I have been very pleased with them and noticed immediate improvement in the handling. The ride is fine. So I think the short answer is you can use truck tires just fine on the fronts.
How you answer the other questions like cost is predicated on some things like, how long you plan to keep your current rig. You probably aren't wanting to shell out for caviar tires if you are going to sell in two years. I called around a few shops today both in Canada (where I live) and the US (Wa.) to see what it might cost to replace my rear drivers and tags. I have received prices ranging from $270 for a China made tire (don't think so) up to $479 for Toyo MY608's. I wasn't looking for the top of the line Michelin's (just yet). The most intriguing suggestion I got today was for Cooper RM253's at $349.00 here in Vancouver. That doesn't include balancing but that seems quite a reasonable price for a decent name. These are considered drive tires and go up a load range (G) from what I have on there currently. What really surprised me was that I seemed to be getting better price options in Canada than the US. Not what I normally expect to find.
1999 - National Tropi Cal