Well, based on your blood work, I'd start with benfotiamine 300mg a day (this is an improved version of thiamine).

There are people with low thiamine, and this leads to all kinds of problems because thiamine is used to metabolize carbs, and alcohols/aldehydes which are in many foods including alcoholic drinks.

People with Candida in the intestines have high levels of aldehydes given off by the Candida when it lives of the sugars you eat, and these aldehydes can cause nerve symptoms.

Benfotiamine is not in local stores normally, so check with iherb.com
I use Doctor's Best brand which is affordable. There are many studies (many from Europe) over the years using this form of thiamine successfully for PN, diabetic and otherwise. It has recently come down in price from being very very expensive (and hard to find even).

more here:
http://neurotalk.psychcentral.com/post653193-4.html

Your D is low but not disasteriously low, like some of the posters who come here. The general estimate rule of thumb is 1000IU for each 10ng desired increase. So 2000IU of D3 may bring you up. Your B12 is right on the borderline (200 is NOT a normal low value), so you may want to raise that a bit with 1mg methyl B12 orally on an empty stomach. Available from iherb too for pennies a day. The new information on B12 is to treat anything below 400-500.