Thanks everyone and from the post this i will do
1.Buy buy long posts of 8'.
2.Use barbed wire.
3.Prop posts with concrete mixer o a 2.5'-3' holes.
4.Plant Kayaba to transition to the live fence.
5.Build a simple house for farm use/Keeper.

I need this last help coz i am a first timer.
1.Where to source for the posts fairly has to be btw Kisaju and Kajiado.
2.Reference of who can do a neat job already got one but need the second for comparison/competitive bargain.

@Gathige, Tokyo and Njung'e any heads up and i am really appreciative of the help am getting.

Another viable alternative source of posts is Kenya Power. There're these poles that they're always changing as they upgrade their infrastructure, they make very sturdy and long lasting fencing poles. From the little I've gathered, they usually dispose of them in a sort of 'inside tender' where mostly it's the employees who bid. Befriend one of them, let him bid on your behalf and if he wins, unampa soda kidogo and you collect your merchandise.

One of those ex-electric poles can give you at least 2-3 fencing poles depending on its length. Iwapo imechakaa sana, give it a fresh liberal coat of used engine oil and voila, there you are. Hebu chunguza where their pole yard is in your locality and make some enquiries.

This deal is too good, let me in on it pls.

So even chiefs fear, then offer incognito!!!

@murchr, For Kei Apple, you plant the seeds and not the stems. BTW the seeds are edible and very sweet... It's a fruit. Start by getting the ripe fruits, which are yellow in colour. Each fruit has very many seeds which you can havest my manually removing the fresh and retain the tiny seeds. Then make some furrows along the intended fence and plant the seeds, water them and will then germinate. Once the seedlings reach knee height, u need to start coiling it to kake a good fence. For best results you can first do a chain link or berded wire fence and coil the kei apple on the fence. You can get the seeds from mature Kei apple during the fruiting season. Kei apple fence is laborious to manage as it requires regular trimming. The thorns are very prickly and painful. Best results if you have a big plot size as it can easily overgrow.

You can also buys seeds at a seeds shop or try KEFRI .

Best of luck