+1 for ecigexpress they have a ton of flavors from almost a dozen vendors which are reasonably priced. I use them all the time.
I am a lazy mixer at this point LOL. You really don't need bottles unless you want something fancy to store it in; i use bottles i have used already. If i use used bottles i mix the same sorta flavor that came in them. If strawberry was in it i put a strawberry recipe in it. You will just end up putting all the parts into the end bottle anyway; Just mix into the bottle. I stopped using a needle on VG a while ago. I just use a 15ml syringe itself for the VG. It has a little point on it any way as it doesn't accept a syringe. I just go to the pharmacist and ask for syringes. They usually give them to you for free

(I go there enough for my kid so they all know me) I have so many now it is not funny. I do have a couple of small plastic beakers since some of my PG/VG are tall and skinny i can't get to the bottom of them so i pour a little into the beaker so i can get it into the syringe but that is all i use them for. Oh and I have one other 10 ml for the flavors that are going into the mix. There is just no way you can have a syringe for every flavor. I have about 40 flavors at the moment and more are in the mail. So just a couple of beakers are a good idea to get the rest out of a bottle but you probably wont be using them to mix in.
Also, keep in mind that you should order a little more of whatever your mix leans towards. In other words, for instance, if your mix is going to be 50PG/50VG and your nic is suspended in PG; you should order a bigger bottle of VG or you will run out of that first since you have PG in nic and plain PG already. So you use up roughly twice as much VG than you do PG. Opposite is true if you are going PG heavy (70PG/30VG) you should order a bigger bottle of PG since you will be using more of that than VG.
I have read posts about a guy who said he worked in a vape shop that spilled 100mg nic on his hands all the time and never even felt dizzy. I have spilled 48mg nic on my hands and not noticed anything at all even while continuing to vape. I mean i get up and wash it off but i do not panic and run to the sink like my flesh is melting. At this point, to me, I think this fact is slightly overrated as it seems some people say if you get 100mg nic on you it is the same as acid or something or even really bad. It is kinda a "meh" point. This topic has been discussed many times over and as far as i can tell it is not as dangerous as you may be lead to think. But that is my own personal opinion and how I choose to handle it. Obviously, the lower your nic is the safer it is.