Bricks, Masonry, Asphalt and Concrete - Raising Concrete pad

I have a 3.5'x3.5' concrete pad outside my back door. Due to some improper grading when the house was built (before I bought it), water comes towards the back door and sits in the pad. I want to raise the height of the pad by addng more concrete on top (and eventually some outdoor tile or something). I only plan on raising it about 1/2" at the leading edge up to 7/8" at the back edge by the back door. This would still give me a good step into the house (about 5.5 inches). The following is my plan of action:

1. Clean existing pad
2. Coat pad with Sakrete Bond Fortifier
3. Raise pad using Sakrete Sand Mix. Bag stated it is good for topping 1/2" up to 2". Will use bond fortifier in place of water per directions.
4. Expansion joint between exposed foundation and new, raised pad.
5. Pour concrete and let cure.

My questions are:
1. I need to make forms. However, I can't find anywhere that carries any sort of bond breaker to coat the forms with so the concrete doesn't stick. Is it necessary?
2. I don't have a wheel barrow or mixer to mix the concrete. I really don't want to rent one because I don't have a way to get it to my house, and getting around to the backyard would be difficult anyway. Can I get a big plastic tub (like a mortar box) and mix it? Do I need to mix all of the concrete at once, or can I do it in batches (need about 3 bags)?

Anything else I should be aware of before tackling this project? As a Civil Engineer, I spec similar stuff all the time on plans, but this is the first time I am doing something like this myself.

Thanks,
Neil

Regarding you slab topping -

You did not mention what kind of cleaning - A better route is slab preparation to get maximum physical and chemical bonding.

An exterior topping (especially thin) is a very fragile material and is subject to many forces. Do you have any frost/ temperature problems that could to peeling/delaminating?

Depending on the "fortifier", you could make future adhesion of a thin tile more difficult.

Dick

Thanks for the reply.

As far as cleaning, I was just meaning to get all dirt, grease, etc. off of the surface. Do you thinkit might need some etching?

There is definitely freeze/thaw here in Maryland. The pad is underneath a 2nd story wood deck so it doesn't usually get direct rain/snowfall, but it does get wet.

I will look into the tile adhesion more thoroughly. I would think this is not a very uncommon project. Maybe I would be better off having a slightly thicker section rather than the tile and do some coloring to the concrete when I pour it?

-Neil