I take it that you are unwilling or unable to enlist the aid of another responsible adult relative or close friend during your early post-op period. This is fine, and I understand the dynamics that sometimes make your approach not only preferable, but smart!
But, you WILL need help, and an absolute minimum is the first 24 hours after surgery when you may still have residual effects of anesthesia, not to mention the narcotic pain medications and the general "sluggishness" of your blood pressure receptors that can cause fainting or a serious fall. You can't drive a car until the third day after anesthesia or narcotic pain pills, so you may need help for that length of time.
You will have drains, bandages, an elastic binder or compression garment, perhaps a surgical bra or breast bandage, and will need to have someone manage these things early on when you cannot (because of lack of mobility or pain), and teach you how to do so when you can. See the link below, as well as the results and recovery section on my breast augmentation page.
So yes, get help, even if it is a nurse-for-hire service. Many plastic surgeons (who operate in their own surgical facility) may offer the for-hire services of their nursing staff, which is a great option, if available. Our nursing staff does this, and are not only the most knowledgeable about my recommendations and practices, but also have a "direct-line" to the surgeon--me. They offer excellent assistance and care, sometimes are able to drive you to your first recheck appointment, and know just what to do. Plus, they usually charge substantially less than the "professional" services that include (unnecessary) things like limo transfer (though that too can be arranged for the right price)!