Personally, I'm not totally against some weapon suggestions. There might be something I'm missing, which will allow me to perform better on foot. Now I would just suggest sticking to one-handed suggestions, because I decided to go with it and I even sold all the extras.
What is fast and powerful on foot with no shield? Military pick? Heavy Sabre? IDK...
(BTW - I don't think that long arming sword is any better than Elite Scimitar. It's even slower than bastard sword, and deals insignificantly more damage than the scimitar. I might give it a go, though. One of my companions carries a balanced one, so I can try it out.)
Regarding economy (we don't need to choose, we can discuss both

), I made most of my money with looting, then tournaments and quest rewards. When you solo a group of raiders you collect up to 700 dinars immediately after battle, then you have some loot on top of that, which will usually net you a bit above a grand total. If I captured prisoners, I'd have twice more, but a the cost of two skill points, slower map speed and the necessity of finding a ransom broker. I decided to try my luck without it...
The problem was, that after I took companions the after battle cash dried and I didn't have as much loot to sell. But bandit parties gotten a bit bigger, so while not swimming in cash, I could still make a living.
I invested in an enterprise in Rivacheg, which brings about a grand every week. Then I was moving between bandit locations, killing off bigger parties and doing lair quest, plus I was at least trying out all the tournaments I found. Some were hopeless, but I won quite a few.
The drawbacks:
1. I'm illiterate. I was mostly broke, so whenever I found a book merchant, I couldn't afford his wares. That resulted in wasted skill points, because I maxed medical skills instead of waiting for a book.
That alone makes this approach a failure.
2. My companions have worse kit than usual.
3. I didn't have an army when I joined a faction.
4. I will never be able to support myself with bandit hunting, which I always could do.
But I'm not sure that my failure proves the whole strategy a failure. I believe that if I tried it again and actually though it all out, I could make it work by simply toting around enough cash for the two medical books. And I will be faster. Technically I could disband prisoners, but we all know it's not going to happen. Now I have no choice, but stay slim, so to speak.
Later strategy predicted taking a city early, and eventually owning pretty much all cities and castles in Calradia. I don't really plan on using lords, just letting them come, so I don't have to fight them over and over again. With 0 right to rule I doubt I could recruit many anyway, even if I tried. I will simply keep the ones that come to me, and my prisons will probably be quite full too.