Usmale,
When Liam was around 7, I remember he had a ladies 7 wood and 9 wood cut down, they are very light and easy to control, also seek out some very light
irons and cut them down and put some junior grips on.
To answer your question I personally think it is more important to work on the correct swing instead of the out come, we used to do loads of chipping into nets/upturned umberella etc sometimes as far as 30-50yds, great fun and keeps them happy, he used a 7/9 woods as drivers and only had a couple of
irons, now of course he has a full set of cobras, still has a 3 and 7 wood cobra composites (very light) and a Ben Sayers 12 degree driver all with graphite mens regular shafts.
You can take him to the course, I used to go when it was quite and use a buggy, tee Liam up on the 150 markers and 100yds on par threes, great fun for them, I used to do this about once every couple of months for a treat and it kept his enthusiam up for another game.
Ian.