@ sharp edge
bhai g congratulation on getting a new bike.
For its clutch u must check it with someone who is already using a sprinter, he can tell you better if it is extra hard or routine... so you can show it to suzuki people.
Best speed during running is 40 - 45 max (with lowest rpm) since the weather has got very hot be extra careful that you dont drive for a long time that its engine may get heated up. Recommended that you change its first engine oil at 350 - 400 KM. and then at 900 - 1000 KM.
And mixture of oil is optional with following ratio
High Octance + Ordinary (Super)
1 Litre + 4 Litre
it will keep your engine clean, smooth and intact for a longer time.
Last but not the least i see that you are from lahore, i take this ocassion to invite you to join lahore bikers club. It would be a pleasure for us.