Just purchased this http://www.e-cigarette-forum.com/fo...2-r5-510-cartos-2-8-3-0-ohms-150-shipped.html and i want to order battery and charger for it tonight so i might be able to vape the day i recieve it, Should i order extended cap now with batt is there a big difference? or should i just order what will fit in it as is, New to this type of device so looking for some pointers