SInce we are still waiting on our first minis to be born I can only speak of my years of experience foaling out my big horses. I always dip navels- twice in the first 24 hours and then one more time the next day. I use a syringe casing and fill with iodine or Novalsan (sp?) and stick the casing up to the cord stump touching the belly and shake it around. I give my mom a dose of Banamine after she foals and a nice hot bran mash. After making sure baby nurses I see if the foal will pass meconium on its own and regardless always follow up with an enema to make sure it cleans out. If I see any additional signs of straining later on, I administer another enema. Since I have de-wormed the mare within 30 days of foaling usually, I administer Ivermectrin to mom again when the foal is a day old. I forgot to mention that after foaling and before the foal nurses I wash with a warm wash cloth the udder and collect a sample of colostrum and read it on my refractormeter to make sure the quality is good and if it is good I will sometimes milk a mare and freeze the colostrum for emergencies. I also draw blood at 12-16 hours old and check the foals IgG levels with a Snap Test kit.
If weather is good I also turn out in a small area the first day for an hour so mom can get some fresh air and take a walk and graze some. A foal's eye sight is poor at this time so you need to take caution with this. On day two I turn out twice a day for an hour or two and on day 3 I will turn out for 4-5 hours mid day increasing the time until they are only brought in at night. By a week old they are out full time if all is well.
This is what I have done for my full sized horses and yes I am dealing with high dollar performance horses but will still follow the same plan with these precious mini babies as well. BTW- Your mare is beautiful and I can not wait to see your baby!