Can someone suggest an itinerary for a 4D 3N stay in Bangkok?

I use to stay at Nice Palace Hotel near Se pan Kwai area,basic facility but worth staying cost less than Thai Baht 550,walking distance to Big C supermarket and BTS station near to Chatuchak weekend market as well.Places of interest depend of what are your pririoty , Safari Park and Dream World suitable for children,big shopping mall like MBK and SIam Paragon(underwater world situated here) are accessable by BTS , beside Cahtuchak you can hang out for almost a day but only during weekend,other than that Petunam(watergate in English) all worth a visit. What I would suggest if possible stay a night in Pattaya . No to mention much but everything can be arrange by travel desk at most hotels.