I think Equity, KCB and Britam don't have much headroom left, so i would not recommend them, not unless 5% increase means hundreds of thousands for you.
As for TransCentury, i am also keenly eyeing it to add more, with the only concern been clarification on the RVR sell price to Citadel. However, its always good to buy/sell at this stage of confusion for better returns, though that is more of gambling than investing.
I would highly recommend CFC Stanbic since you clearly stated you are a Long Term Fellow (Though Long Term is Relative, to me its 3-4 years, or when i am satisfied).
Disclaimer: I hold Britam, TransCentury and CFC. Stocks trading is not my primary source of income.
Receive with simplicity everything that happens to you.” ― Rashi