Debates on evolution that revolve around, whether you believe Darwin's theory of how we came about, or the literal acceptance of the first book of the Christian bible, generally lead nowhere, as participants usually have rigid beliefs, I thinkthis is the best routeto take, as the cell is the building block of life; your at the "coal face"in a manner of speak. You have good input there, and your right, the question of intelligence can come later. Children at play will form themselves into small groups, each group will then take, almost an existence of it own, with an overall mindset and drive to preserve itself, so will a street gang. In a sense, cells in an organism do much the same, there are cells for making bone, cells for making muscle, cells for repairing the body and, cells for fighting off 'outside invasion' - "warrior cells" if you like. Whether the body stays healthy or diseased, how antibiotics work, or not, and the formation MRSA, all depend in how the cells perform.
What I find puzzling about ID/creationists is what they choose to fight about; seldom do they bring up the bombardier beetles or the complex set of hormonal messages that control the amorphous mass of cells after the zygote divides and the beginning of cell differentiation. So many different instructions must be turned off and on at just the correct time to produce a viable life-form.
This leads to the complexities of DNA, RNA, rDNA, mRNA, tRNA, …